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EventInput(Linux): experimental initial read of values

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First test of reading the button state and axes positions
on initialization of the device.
This commit is contained in:
Torsten Dreyer 2011-01-17 20:27:03 +01:00
parent 2ba4f3ddad
commit 4e3a2a2c1c
1 changed files with 77 additions and 16 deletions
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69
src/Input/FGLinuxEventInput.cxx
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@ -17,8 +17,6 @@
// You should have received a copy of the GNU General Public License // You should have received a copy of the GNU General Public License
// along with this program; if not, write to the Free Software // along with this program; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
//
// $Id$
#ifdef HAVE_CONFIG_H #ifdef HAVE_CONFIG_H
# include <config.h> # include <config.h>
@ -33,6 +31,12 @@
#include <fcntl.h> #include <fcntl.h>
#include "FGLinuxEventInput.hxx" #include "FGLinuxEventInput.hxx"
#include <poll.h>
#include <linux/input.h>
#include <dbus/dbus.h>
#include <fcntl.h>
#include <string.h>
struct TypeCode { struct TypeCode {
unsigned type; unsigned type;
@ -277,9 +281,9 @@ FGLinuxInputDevice::FGLinuxInputDevice() :
{ {
} }
static inline bool bitSet( unsigned char * buf, unsigned char bit ) static inline bool bitSet( unsigned char * buf, unsigned bit )
{ {
return (buf[bit/sizeof(bit)/8] >> (bit%(sizeof(bit)*8))) & 1; return (buf[bit/sizeof(unsigned char)/8] >> (bit%(sizeof(unsigned char)*8))) & 1;
} }
void FGLinuxInputDevice::Open() void FGLinuxInputDevice::Open()
@ -293,6 +297,7 @@ void FGLinuxInputDevice::Open()
SG_LOG( SG_INPUT, SG_WARN, "Can't grab " << devname << " for exclusive access" ); SG_LOG( SG_INPUT, SG_WARN, "Can't grab " << devname << " for exclusive access" );
} }
{
unsigned char buf[ABS_CNT/sizeof(unsigned char)/8]; unsigned char buf[ABS_CNT/sizeof(unsigned char)/8];
// get axes maximums // get axes maximums
if( ioctl( fd, EVIOCGBIT(EV_ABS,ABS_MAX), buf ) == -1 ) { if( ioctl( fd, EVIOCGBIT(EV_ABS,ABS_MAX), buf ) == -1 ) {
@ -306,6 +311,61 @@ void FGLinuxInputDevice::Open()
continue; continue;
} }
absinfo[i] = ai; absinfo[i] = ai;
SG_LOG( SG_INPUT, SG_INFO, "Axis #" << i <<
": value=" << ai.value <<
": minimum=" << ai.minimum <<
": maximum=" << ai.maximum <<
": fuzz=" << ai.fuzz <<
": flat=" << ai.flat <<
": resolution=" << ai.resolution );
// kick an initial event
struct input_event event;
event.type = EV_ABS;
event.code = i;
event.value = ai.value;
FGLinuxEventData eventData( event, 0, 0 );
eventData.value = Normalize( event );
HandleEvent(eventData);
}
}
}
}
{
unsigned char mask[KEY_CNT/sizeof(unsigned char)/8];
unsigned char flag[KEY_CNT/sizeof(unsigned char)/8];
memset(mask,0,sizeof(mask));
memset(flag,0,sizeof(flag));
if( ioctl( fd, EVIOCGKEY(sizeof(flag)), flag ) == -1 ||
ioctl( fd, EVIOCGBIT(EV_KEY, sizeof(mask)), mask ) == -1 ) {
SG_LOG( SG_INPUT, SG_WARN, "Can't get keys for " << devname );
} else {
for( unsigned i = 0; i < KEY_MAX; i++ ) {
if( bitSet( mask, i ) ) {
struct input_event event;
event.type = EV_KEY;
event.code = i;
event.value = bitSet(flag,i);
FGLinuxEventData eventData( event, 0, 0 );
HandleEvent(eventData);
}
}
}
}
{
unsigned char buf[SW_CNT/sizeof(unsigned char)/8];
if( ioctl( fd, EVIOCGSW(sizeof(buf)), buf ) == -1 ) {
SG_LOG( SG_INPUT, SG_WARN, "Can't get switches for " << devname );
} else {
for( unsigned i = 0; i < SW_MAX; i++ ) {
if( bitSet( buf, i ) ) {
struct input_event event;
event.type = EV_SW;
event.code = i;
event.value = 1;
FGLinuxEventData eventData( event, 0, 0 );
HandleEvent(eventData);
}
} }
} }
} }
@ -514,3 +574,4 @@ void FGLinuxEventInput::update( double dt )
} }
} }
} }